The hard disk serial number is an important identifier of the hard disk and is usually used to uniquely identify the hard disk and identify the hardware. In some cases, we may need to query the hard drive serial number, such as when installing an operating system, finding the correct device driver, or performing hard drive repairs. This article will introduce some simple methods to help you check the hard drive serial number. Method 1: Use Windows Command Prompt to open the command prompt. In Windows system, press Win+R keys, enter "cmd" and press Enter key to open the command

Xiaomi 14Ultra is one of the most popular Xiaomi models this year. Xiaomi 14Ultra not only upgrades the processor and various configurations, but also brings many new functional applications to users. This can be seen from the sales of Xiaomi 14Ultra mobile phones. It is very popular, but there are some commonly used functions that you may not know yet. So how does Xiaomi 14Ultra switch between 4g and 5g? Let me introduce the specific content to you below! How to switch between 4g and 5g on Xiaomi 14Ultra? 1. Open the settings menu of your phone. 2. Find and select the "Network" and "Mobile Network" options in the settings menu. 3. In the mobile network settings, you will see the "Preferred network type" option. 4. Click or select this option and you will see

How to write a simple online reservation system through PHP. With the popularity of the Internet and users' pursuit of convenience, online reservation systems are becoming more and more popular. Whether it is a restaurant, hospital, beauty salon or other service industry, a simple online reservation system can improve efficiency and provide users with a better service experience. This article will introduce how to use PHP to write a simple online reservation system and provide specific code examples. Create database and tables First, we need to create a database to store reservation information. In MyS

How to convert Win11 Home Edition to Win11 Professional Edition? In Win11 system, it is divided into Home Edition, Professional Edition, Enterprise Edition, etc., and most Win11 notebooks are pre-installed with Win11 Home Edition system. Today, the editor will show you the steps to switch from win11 home version to professional version! 1. First, right-click on this computer on the win11 desktop and properties. 2. Click Change Product Key or Upgrade Windows. 3. Then click Change Product Key after entering. 4. Enter the activation key: 8G7XN-V7YWC-W8RPC-V73KB-YWRDB and select Next. 5. Then it will prompt success, so you can upgrade win11 home version to win11 professional version.

Many friends may not be used to the win system when they first come into contact with it. There are dual systems in the computer. At this time, you can actually switch between the two systems. Let's take a look at the detailed steps for switching between the two systems. How to switch between two systems in win10 system 1. Shortcut key switching 1. Press the "win" + "R" keys to open Run 2. Enter "msconfig" in the run box and click "OK" 3. In the open "System Configuration" In the interface, select the system you need and click "Set as Default". After completion, "Restart" can complete the switch. Method 2. Select switch when booting 1. When you have dual systems, a selection operation interface will appear when booting. You can use the keyboard " Up and down keys to select the system

Today I was doing an experiment on centOS and found that the customary tab key completion method used under Ubuntu could not be used. So I was very curious. After searching for information and testing it myself, I recorded the possible solutions as follows: 1) First, you need to Run the following command in the terminal: #yuminstallbash-completion//You can also use wildcard installation: yuminstallbash-c* or you can install some initialization package groups yum-ygroupinstallBaseCompatibilitylibrariesDebuggingToolsDial-upNetworkingsupppo

Introduction to how to use PHP to develop simple file management functions: File management functions are an essential part of many web applications. It allows users to upload, download, delete and display files, providing users with a convenient way to manage files. This article will introduce how to use PHP to develop a simple file management function and provide specific code examples. 1. Create a project First, we need to create a basic PHP project. Create the following file in the project directory: index.php: main page, used to display the upload table

Win11 supports users to use the alt+tab shortcut key to bring up the desktop switching tool, but recently a friend encountered the problem that win11 alt+tab cannot switch the interface. I don’t know the reason or how to solve it. Why can't win11 alt+tab switch the interface? Answer: Because the shortcut key function is disabled, here is the solution: 1. First, we press "win+r" on the keyboard to open the run. 2. Then enter "regedit" and press Enter to open the group policy. 3. Then enter "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer"